Eadio signaling  apparatus



Feb. 7, 1928.

R. H- LANGLEY RADIO SIGNALING APPARATUS Fagd Jan. 7. 1922.

Inventor Ralph lLLiuugley, by Q His Attorney.

Patented Feb. '1 1923.

barren srarssearanr as RALPH LANGLEY, OF SCIIENEGTi'lDY, NEW YGIt-K, AESlG-NOR E G-Ell'ERAL ELEG- TRIC COMPANY, A CGBPORATIOH OF NEW] YORK.

RADIO SIGNALING APPA RATUS.

Application filed January 7, 1922. Serial No. 527,725.

My present invention relates to radio signaling apparatus and more particularly to apparatus made up in the form of separate units which may be connected together, each unit being adapted to perform one particular function in a radio signaling system.

One of the objects of my invention is to provide a cabinet for radio signaling apparatus which will'be of simple and rigid construction and which will readily permit of convenient access to all of the elements withj in the cabinet.

thereof, will best be understood by reference to the following description taken in connection with the accompanying drawing in which Fig. 1 is an elevation of a cabinet with the cover removed and with one side broken away to show the mounting of the apparatus; Fig. 2 is a plan view of the cabinet with the cover removed; 8 is a perspective view of the cabinet withthecover on and Fig. l is a detail view of the hinge for the cover.

As indicated in the drawing. one ofmy improved cabinets comprises a box, preferably of metal, made up of two substantially equal parts 1 and 2. The part 1 forms the front of the cabinet and the part 2 serves as a cover for the apparatus which is mounted on the front. The front part of the box is secured to a base made up of a bottompart 3 and side members 4, 5 6 and 7, the bottom and side members being secured to corner posts 8 which project above the members 4, 5, 6 and 7 so that the front part of the box may be conveniently secured to posts 8 and hence to the base.

The dividing: lines between the two parts of the box are located at the top front edge, the i rear edge and along lines v r are .y .antially the diag. sale 9 of the. a

19 and 20 outside the cabinet.

sides between these edges. By dividing the box in this way two important advantages are obtained; the portions of the two sides which are attached to the front of the box serve as supports therefor so that the box may be made of comparatively thin material and yet be rigid enough so that all of the apparatus desired may be mounted on the front and when the rear portion ofthe box or cover is removed all of the apparatus within the box will be readily accessible for repair or renewal.

The rear portion or cover of the box may be secured to the front bymeans of two hlnge members 10 which are secured to the back of the box. These hinge members have slots 11 which form guides for the pins 12,

which project upwardly from the rear side member 5 of the base. The cover is then held in place by means of the catch memhere 13 and 14: secured to the front portion and cover respectively. By pressing downwardly upon the button 15 the catch member 14 may be released from engagement with member 13 and the cover removed. The

hinge construction at the rear lower edge of the cabinet permits the cover to be swung back to inspect the apparatus within the cabinet or its complete removal if adjustments or repairs are needed. Stops 16 which are secured to the two sides of the cover prevent any sidewise or vertical movement of the cover after it has been secured to the front of the cabinet.

A cabinet such as I have described and illustrated may be used for mounting any signalinr; apparatus desired for performing a definite function as for example, ordinary tuning apparatus for receiving radio signals,

vacuum tube detectors or vacuum tube amplifiers. In the present case I have illustrated one manner in which suitable appa ratus to make up a vacuum tube detector may be mounted in the cabinet. The apparatus illustrated comprises a plate battery potentiometer 17 and a filament rheostat 18 which are mounted on the inside of the front of the cabinet with their operating handles Two brackets 21 and 22 which are secured to the front of the cabinet serve as supports for a socket 23 for a vacuum tube. A flexible connection between the vacuum tube socket and the bracket is furnished by a plurality of super- .osed washers 524: of s lastic mate-'- ra'lity ofsiinilar tern. into the side'members e'l.

. idied-With holes-36 into whic he inserted-and soldered. 2 -la minals on the rear may he employed.

rial such for example, as felt. fhe lower of these Washers only are attached to the tour arms 25, 26, on the brackets 21 and 22, voile all of the Washers are secured to the socket 253 by means of the four screw bolts 28 Which are located at points around the ircumterence of the Washers a5 degrees removed from the points Where the lower Washers are attached to the brackets.-

v The bracket 21 also. carr es at its end a base member 29 on which be mounted aigr'id condenser 30 and a grid leak resistance 3L Similaily the bracket carries at; its end ahase member 32 noon, which the phone, hr: k coui may hemounteded. A teiephi v .nteo on the front. of the cahilict ecting the receivirg telep ice to i vector To permit toe conveni other. apparatus 'o min, the convenient ca described otl in similar cacniets I 5 wfiCl). o have prov nls =1 thes -n1e1nhers preferably n sulatin'g material. These te tors making, up the circuit co? are also provided with openings ceiving a conductor connecting; the, to other apparatus these conilucso d mped by means of the screws as A areiinside the cabinet but. are easily acce ssible When the cover is removed. 5h e making battery connections and for connectextra telephones to the unit and the terminals on the sides for connecting the unit to other units.

The: construction .1 I have describe-cl permits or great flexibility-in making up a complete radio receiving system a. lowing any single unit to be employed in combination with as many other units as desired. example, it a receiving system desired made up of a tuner, detector and one stage of audio amplification, a unit containing the for units adapted to serve through froni one unit to the other by meansof the. side. terminals, As many stages of radio or audio ainplrtication as may be de sired maybe connected together no this may to huild up a receiving set.

lVhilei l have shown a l described a unit Wluch is adapted to serve sing'e-iiunction the: same style of cabinet two or more suit m to oaher units perform additional functions. llfhai I claim as new and desire to secure by Letters Patent of the United Sta ns is',-- l. A vacuum tube mounting coir 'n a pport a plurality of supe 4 shore of res lient material, means tions c in turn such a for securing a portlcnonly of said washers tosaid ort, a vacuum tuheso 'lret meansfor ring all of said washers to sai i socket.

2. .Pi vacuum tuhe mounting comprising a ppo.rt,a plurality of superimposed washer or" remlient. nia

he einp eyed no; sul'istantially equ a1, and means vacuum tube mounting oinprising 

